The *Core i9* 21.5“ 4K iMac Apple NEVER sold, is it better than the M1 iMac?

Huge thanks to iFixit for sponsoring today’s video! As usual you can find all the parts and tools you need for an upgrade or repair project at With the new M1 24 inch iMac here for 2021, I thought it would be worth taking a moment to look back at the old 2019 21.5 inch 4K iMac. Specifically, the old design retains a lot of upgradability that Apple has been getting rid of for years now. The last upgradable iMac can actually be taken quite far, so today I’m going to upgrade a 21.5 inch iMac from the core i3 to a core i9! *Parts, tools, and resources* Core i9 9900: 32gb DDR4: OWC Aura SSD: IFixit Adhesive strips: Pro Tech Toolkit: iFixit 2019 iMac repair guides: “_Retina_4K_Display_2019 Follow me on Twitter: Follow me on Twitch: Join my Subreddit! http